Service calls now retain their original deadline from admission through retries and duplicate requests. Repair expires an overdue call without API polling, and a late service result cannot replace its timed-out outcome or deliver a second caller result.
Deadline policies accept either a positive integer timeout_seconds or an explicit-offset RFC3339 deadline_at with up to six fractional digits. Call views retain UTC microsecond acceptance and deadline timestamps.
Before upgrading, back up the database and replace old application and worker processes. The migration derives existing deadlines from original acceptance and policy. Unsupported stored policies stop migration with the affected call ID.
Full source qualification passes unit/coverage, all MySQL/PostgreSQL shards, MariaDB, five Laravel upgrade checks, quality and the official embedded replay corpus. Published package and downstream Server image verification are recorded on #761.